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Electrochemically Active Glass Separators for Lithium-Ion Batteries


Schadeck, Ulrich ; Gerdes, Thorsten ; Krenkel, Walter ; Moos, Ralf:
Electrochemically Active Glass Separators for Lithium-Ion Batteries.
Veranstaltung: The Energy & Materials Research Conference (EMR 2018) , November 8-9, 2018 , Torremolinos, Spain.
(Veranstaltungsbeitrag: Kongress/Konferenz/Symposium/Tagung , Vortrag )


Lithium-ion batteries are an integral part of today's society. They are used in almost any mobile electrical device, since they have higher energy densities and a more efficient cyclic stability than other battery types such as lead-acid or nickel-cadmium batteries. Therefore, Lithium-ion batteries have become the standard choice of power sources for electric vehicles. This results in enhanced safety requirements. To replace todays used electrochemically passive polymer-based battery separators with poor stability to high temperatures, a novel high-temperature stable and self-supporting composite separator for lithium-ion batteries is developed consisting of custom-made ultrathin micrometer-sized sodium borosilicate glass platelets embedded in a glass fiber nonwoven together with a water-based binder. The presented separator is electrochemically active, whereas ions from the glass platelets are provided during progressing cycling, behave like an electrolyte additive, and improve the battery performance. For comparison, glass platelets with alternative compositions are investigated. The glass separators are tested in a graphite/lithium iron phosphate full-cell configuration. Charge/discharge tests at different current rates up to a 10C-rate, post-mortem analysis, impedance measurements and electric analysis methods are used to interpret the specific influence of glass on cell aging.

Weitere Angaben

Publikationsform: Veranstaltungsbeitrag (Vortrag)
Begutachteter Beitrag: Ja
Institutionen der Universität: Fakultäten > Fakultät für Ingenieurwissenschaften
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Werkstoffverarbeitung
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Funktionsmaterialien > Lehrstuhl Funktionsmaterialien - Univ.-Prof. Dr.-Ing. Ralf Moos
Profilfelder > Advanced Fields > Neue Materialien
Forschungseinrichtungen > Forschungszentren > Bayreuther Materialzentrum - BayMAT
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Funktionsmaterialien
Profilfelder > Advanced Fields
Forschungseinrichtungen > Forschungszentren
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Eingestellt am: 19 Dec 2018 10:22
Letzte Änderung: 14 Mär 2019 09:28
URI: https://eref.uni-bayreuth.de/id/eprint/46708